During the Great Recession of 2008 and 2009, employers cut many of their employees’ work hours. For most, the average workweek eventually returned to pre-recession levels, but that was not true for those at the bottom quintile of the wage distribution. On average, low-wage employees work one hour less per week than they did in 2007, forgoing $500 per year in income. This trend has significantly affected several industries and occupations. Obamacare will further reduce hours by increasing the costs of hiring full-time employees while discouraging workers from working full-time. Fewer work hours will impede income mobility for low-wage workers.